Robert Thompson / A fallen Sweet chestnut fruit (Castanea sativa) lying on the woodland floor, with a tree trunk covered in Textured lungwort (Lobaria scrobiculata) lichen, UK. October.

Alex Hyde / Commuity of mosses predominately red Sphagnum Moss (Sphagnum sp.), with Reindeer Lichen (Cladonia sp.) growing alongside, in blanket bog. Glen Affric, Scotland, UK. October. Focus stacked image.

Lucas Bustamante / Lichen Katydid (Markia hystrix) camouflage in lichens. Sumaco National Park, Napo, Ecuador

SCOTLAND: The Big Picture / Puffin (Fratercula artica) with orange sea lichen (Caloplaca marina) covered roch behind, Shiant Isles, Outer Hebrides, Scotland, UK. June.

Erlend Haarberg / Crustose lichens (Lecanorales) on rocks in Swedish Padjelanta National Park, Laponia World Heritage Site, Sweden. August. Highly commended in the GDT European Wildlife Photographer of the Year com...

SCOTLAND: The Big Picture / Scots pine (Pinus sylvestris) seedling growing amongst lichens and heather. Cairngorms National Park. Highlands, Scotland, September.

Chris Mattison / Lichen (Nephroma antarctica) Rio Serrano, Chile. Focus stacked image.

Orsolya Haarberg / Lichen-covered rocks in snowy winter landscape. Sandfjorden, Varanger, Finnmark, Norway. March 2010

Nick Upton / Garden chair well covered with extensive growths of lichen, including filamentous forms (Usnea sp.), (Evernia prunastri) and Foliose (Flavoparmelia caperata), Cornwall, UK, August.

Staffan Widstrand / Lichen (Xanthoria sp) growing on rocks by coastline, Svalbard, Norway

Niall Benvie / Composite of nine images of close ups of lichen and moss on bark of European Beech tree (Fagus sylvatica) Scotland, UK

Joe Cornish / 2020VISION / Lichen and rock detail, Coigach / Assynt SWT, Sutherland, Highlands, Scotland, UK, June

Peter Cairns / 2020VISION / Rock ptarmigan (Lagopus mutus) male hidden by rocks, eye visible, winter plumage, Cairngorm Mountains, Cairngorms NP, Highland, Scotland, UK, February

Bence Mate / Green crowned brilliant hummingbird (Heliodoxa jacula) male taking off to feed at feeder in garden, another waiting perched on lichen covered branch, Costa Rica, January. Winner, Eric Hosking award at...

Peter Cairns / 2020VISION / Upland woodland containing birch, oak, hazel, Inverpolly, Sutherland, Highlands, Scotland, UK, January 2011

Niall Benvie / 2020VISION / Close up of lichen on rock, Assynt, Assynt Uplands, Scotland, UK, January

Niall Benvie / 2020VISION / Lichen on rocks, Assynt, Assynt Uplands, Scotland, UK, January

Adrian Davies / Orange coloured Seashore Lichens (Xanthoria parietina) and Sea Ivory (Ramalina siliquosa) UK, August

Alan Watson / Heart-shaped patch of lungwort (Lobaria virens) on the moss-covered trunk of Oak tree (Quercus petraea) and Holly trees (Ilex aquifolium) temperate forest, Tomies Wood, Killarney National Park, County...

Alan Watson / Heart-shaped patch of lungwort (Lobaria virens) on the moss-covered trunk of Oak tree (Quercus petraea) and Holly trees (Ilex aquifolium) temperate forest, Tomies Wood, Killarney National Park, County...

Edwin Giesbers / Map lichen (Rhizocarpon geographicum) on rock with (Hyoseris radiata) flower, Menorca, Balearic Islands, Spain, Europe

Edwin Giesbers / Map lichen (Rhizocarpon geographicum) on rock and (Hyoseris radiata) flower, Menorca, Balearic Islands, Spain, Europe

Edwin Giesbers / Map lichen (Rhizocarpon geographicum) on rock, Menorca, Balearic Islands, Spain, Europe

Wild Wonders of Europe / Elander / Palmate newt (Lissotriton helveticus) on lichen covered rock, living at 2,150m, Vall D??les, Andorra, June 2009 WWE OUTDOOR EXHIBITION. WWE BOOK

Wild Wonders of Europe / Hermansen / Razorbill (Alca torda) landing on rock carrying fish, Saltee Islands, County Wexford, Ireland, June 2009

Wild Wonders of Europe / della F / Lichens growing on a Blackthorn (Prunus spinosa) near Zadrzani village, Northern Livanjsko Polje, Bosnia and Herzegovina, May 2009

Wild Wonders of Europe / Giesbers / Moss campion (Silene acaulis) in flower growing on rock, Liechtenstein, June 2009

Wild Wonders of Europe / Maitlan / Oak leaves and lichen in forest, Konjsko region, Galicica National Park, Macedonia, June 2009

Andy Rouse / Great tit (Parus major) perched on branch, UK

Jack Dykinga / Petrified sandstone formation with bold striated patterns and lichen covered stones, Paria Canyon-Vermilion Cllffs Wilderness, Arizona, USA

Jack Dykinga / Concretion balls lining fracture lines in petrified sand dune formation, with lichen scaring calcification marks, Colorado Plateau, Arizona, USA

Jack Dykinga / Lichen covered rocks at Marble Viewpoint, Kaibab National Forest, Grand Canyon National Park, Arizona, USA

Jack Dykinga / Lichen covered rocks at Marble Viewpoint, Kaibab National Forest, Grand Canyon National Park, Arizona, USA

Wild Wonders of Europe / O. Haarberg / Lichen covered rocks, Kallsk? Stockholm Archipelago, Sweden, June 2009

Wild Wonders of Europe / O. Haar / Rocky coastal landscape, L?vikssk? Stockholm Archipelago, Sweden, June 2009

Wild Wonders of Europe / Müller / European beech (Fagus sylvatica) trunks in forest covered in lichens, Pollino National Park, Basilicata, Italy, November 2008

Wild Wonders of Europe / Müller / Fallen European beech leaves (Fagus sylvatica) and a twig with Lichen growing on it on the ground, Pollino National Park, Basilicata, Italy, November 2008

Wild Wonders of Europe / Widstrand / Shadow of male Spanish ibex (Capra pyrenaica) on rock, Sierra de Gredos, Spain, November 2008

Wild Wonders of Europe / Cairns / Map lichen (Rhizocarpon geographicum) on granite rock, Sarek National Park, Laponia World Heritage Site, Lapland, Sweden, September 2008

Wild Wonders of Europe / Cairns / Map lichen (Rhizocarpon geographicum) on granite, Sarek National Park, Laponia World Heritage Site, Lapland, Sweden, September 2008

Chris O'Reilly / Female Great spotted woodpecker (Dendrocopus major) perched on a lichen covered branch, Cairngorm NP, Scotland, UK, winter

Ross Hoddinott / 'Oakmoss' lichen {Evernia prunastri} on oak tree branch, Exmoor National Park, Somerset, UK. October

Ross Hoddinott / Blue tit {Parus caeruleus} on branch, Cornwall. UK

Martin Gabriel / Mediterranean land snails {Solatopupa similis} Provence, France

Gabriel Rojo / Austral parakeet {Enicognathus ferrugineus} Lanin NP, Argentina

Ross Hoddinott / Map lichen {Rhizocarpon geographicum} Dartmoor NP, Devon, UK

Ross Hoddinott / Map lichen {Rhizocarpon geographicum} UK

Asgeir Helgestad / Young Reindeer feeding on lichen under snow {Rangifer tarandus} Buskerud, Norway